Hoisting device



'(No Model.) I

' A. BOGARDUS. HOISTING DEVICE.

No. 565,402. Patented Aug. 4, 1896.

WITNESSES WW/J/M NITED STATES PATENT- ALFRED BOGARDUS, OF JERSEY CITY,NEWV JERSEY.

HOlSTlNG DEVICE.

SPECIFICATION forming part of Letters Patent No. 565,402, dated August4, 1896.

Application filed April 10, 1898. Serial No. 586,978. (No model.)

To all whom it may concern/.-

Be it known that I, ALFRED BOGARDUS, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and usefulImprovement in Hoisting Devices, of which the following is afull, clear,and exact description.

My invention relates to an improvement in hoisting devices particularlyapplicable to dumb-waiters and like articles.

The object of the invention is to provide a hoisting device by means ofwhich the dumbwaiter or other article attached may be permitted todescend rapidly or slowly as desired, and manipulated with but littleexertion.

Another object of the invention is to provide a means for locking thehoisting device at any time necessary during the hoisting of theattached article, the locking mechanism acting automatically.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth,and pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming apart ofthis specification, in which similar characters of reference indicatecorresponding parts in both the figures.

Figure 1 is a side elevation of the hoisting device. Fig. 2 is alongitudinal vertical section through the same, the shaft beingin sideelevation.

In carrying out the invention the hoistingshaft A is mounted to turn insuitable bearings B, secured upon timbers O or the equivalents of thesame. A ratchet or toothed wheel is firmly fastened to the shaft A,preferably at a point near its center, and a box-wheel 11 is mounted toturn loosely on the hub of the ratchet-wheel, the flange of thelooX-wheel extending over the toothed portion of the ratchet-wheel, asshown in Fig. 2. The box-wheel is provided with one or more pockets 12,in which gravitypawls 13 are mounted, the said pawls being adapted toengage with the toothed surface of the ratchetwheel, as shown in Figs. 1and 2, permitting the ratch et-wheel to turn freely in one direction,but preventing it from turning in the opposite direction.

The box-wheel is closed by a cap 14,secured to its flange, and the saidcap prevents the pawls 13 from dropping out from the wheel, and likewiseprevents dust and dirt from reaching the ratchet-wheel. to partiallysurround the peripheral portion of the box-wheel 11, the saidstrap-brake being secured at one end to the crank-arm 16 of a lever 17,suitably journaled on one of the aforesaid timbers O, or upon any fixedsup port, while the opposite end 18 of the strapbrake is firmly fastenedto a suitable support at a pointbelow the crankarm 16 of the lever, asillustrated in Fig. 1. 4

A rope 19 is attached to the upper end of the lever 17 being carried toone side of the device and downward over a pulley 20, journaled upon asuitable upright 21 or other support, and the rope 19 is provided with aweight 22 at its lower end, serving to hold the lever 17 in suchposition that the brake will be normally applied to the box-wheel andconsequently to the ratchet-wheel 10. A second rope 23 is attached tothe lever 17, being led therefrom in an opposite direction to the rope19, and the said rope 23 is passed over guidepulleys 24, located upon anupright 25 or its equivalent, and at the lower end of the second rope 23a weight 26 is attached, smaller than the weight 22 of the rope 19, sothat when it is desired to release the brake from the box-wheel it isonly necessary to draw upward upon or slacken the rope 19, whereupon theweight 26 will act to draw the lever 17 away from the box-wheel andloosen the brake thereon in proportion to the degree to which theaforesaid rope 19 is slackened, and the weight 26 likewise serves torender it easy to slacken the rope 19, since the full heft of the weight22 will not be felt by the operator.

A pulley 27 is secured on the shaft A, and over this pulley a rope 28 ispassed, which at one end is connected with a dumb-waiter or otherarticle to be hoisted, the opposite end of the rope carrying a suitablecounterbalance for the load, and the rope 28 is passed overguide-pulleys 29 and 29*, suitably lo cated. A large hoisting-wheel 30is secured to the shaft A, and an endless rope 30 is passed around thiswheel, which in manipulated in the usual manner when the load is to behoisted. It is evident that in this construction the ratchet-wheel willturn freely in the box-wheel while the load is being lifted Astrap-brake 15 is made but the moment that the operation of thehoisting-rope ceases the paWls 13 will immediately fall to an engagementwith the teeth of the ratchet-Wheel, preventing the load fromdescending, and that at any time, as heretofore stated, by slackeningthe rope 19 the load will be permitted to descend more or less rapidlyas desired.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In ahoisting apparatus,a shaft,a ratchet- Wheelsecured to the shaft, a box-Wheel loosely mounted upon and surroundingthe ratchet- Wheel, pawls carried by the box-Wheel, being adapted forengagement with the teeth of the ratchet-Wheel, and a strap-brakecontacting with and controlling the aforesaid box- Wheel, as and for thepurpose specified.

2. In a hoisting device, the combination, with a hoisting-shaft and aratchet-Wheel secured thereto, of a box-Wheel loosely mounted upon andsurrounding the ratchet-wheel, gravity-pawls located in the boX-Wheel,and a strap-brake engaging with the peripheral portion of the box-Wheel,as and for the purpose specified.

3. In a hoisting device, the combination, with a shaft, means forrotating the said shaft, and a ratchet-wheel secured to the shaft, of aloosely-mounted box-Wheel surrounding the ratchet-Wheel, gravity-pawlslocated in the box-wheel, being adapted for engagement with theratchet-Wheel, and a lever-operated strap-brake engaging Withtheperiphery of the said boX-Wheel, as and for the purpose specified.

4. In a hoisting device, the combination, with a shaft, meansforrotating the said shaft, and a ratchet-Wheel secured to the shaft, ofa loosely-mounted box-Wheel surrounding the ratchet-wheel, gravity-pawlslocated in the box-wheel, a lever-operated strap-brake engaging With theperiphery of the said box- Wheel, and Weighted .ropes attached to thelever of the strap-brake, leading therefrom in opposite directions,substantially as shown and described.

5. In a hoisting device, the combination, with a hoisting-shaft, meansfor rotating the same, a pulley secured to the said shaft and arrangedto carry the hoisting-rope, and a ratchet-Wheel also secured to theshaft, of a loosely-mounted box-Wheel provided with gravity-pawlsarranged for engagement with the teeth of the ratchet-Wheel, astrap-brake engaging With the periphery of the box-Wheel, a leverconnected with the inner end of the said strap-brake, and ropes leadingin opposite directions from the said lever, the ropes being providedWith Weights of differenthefts, as and for the purpose specified.

ALFRED BOGARDUS.

Vitnesses:

J. FRED. ACKER, JNo. M. RITTER.

